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Résultats de la recherche

Showing items 1 through 9 of 5.
  1. Library Resource
    Documents de politique et mémoires
    décembre, 2009

    In the presented paper there is presented description of discredited calculation model and course of calculations of design connected with project of secondary tillage set of new generation for simultaneous soil tillage and sowing with the use of universal drill. The design was elaborated with the use of computer system CAD-3D that allowed to build virtual solid models of machine. Strength calculations were carried out with the use of computer system of the high range group.

  2. Library Resource
    Documents de politique et mémoires
    décembre, 2010
    Pologne

    The restructuring of the State Forests National Forest Holding activity also covered the functioning of the existing forest building infrastructure in the forest district administrations. In the paper I present the issues and specificity of forest building engineering, as well as problems connected with the sales of buildings offered by the State Forests National Forest Holding in 1999-2008. To illustrate the process of selling buildings in RDSF, an analysis of real estate foreseen for sale and listed in the -Information Bulletin of State Forests - in 1999 to 2008 was carried out.

  3. Library Resource
    Documents de politique et mémoires
    juin, 2010
    Inde

    Human activities have exerted small to large scale changes on the hydrological cycle. The current scenario regarding groundwater resources suggests that globally there is a water crisis in terms of quantity (availability) and quality. Therefore there is a great need for the assessment and monitoring of quality and quantity of groundwater resources at local level. This paper presents a case study of the lower Shiwalik hills, in Rupnagar, Punjab, India, to trace land-use and land-cover changes during the past 17 years, with an emphasis on groundwater quality and quantity.

  4. Library Resource
    Documents de politique et mémoires
    décembre, 2008
    Pologne

    The aim of this study was to determine the effect of the soil tillage system on soil enzymatic activity. The performed investigations, employing two soil tillage systems: classical (ploughing) and simplified (no-tillage), were carried out on lessives soils (Luvisols) and rusty soils (Arenosols) differing typologically, with regard to their kind and species. The activity of the following five enzymes was determined in soil samples: dehydrogenases, acid phosphatase, alkaline phosphatase, urease and protease.

  5. Library Resource
    Documents de politique et mémoires
    décembre, 2008
    Pologne

    Agricultural production is based on environmental natural resources, that is soil, water, air and the whole landscape with its biodiversity. The using with resources of soil should therefore be balanced which would combine the tasks of farmhold utilizing from both economical, social and environmental protection point of views. Principles these be realized in special means by ecological agriculture as sustainable system of food production.

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